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Ryzen 1700 boost does not seem to work

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  • Ryzen 1700 boost does not seem to work

    Hi, I just finished building my new PC, containing:
    • Ryzen 7 1700
    • AsRock AB350M Pro4 (Bios 3.00)
    • 2x8GB HyperX RAM 2667
    • Samsung Evo 960
    • Ubuntu MATE 17.04 (kernel 4.12 currently, but also tested the default 4.10)

    I do not suffer from any stability problems, everything is perfectly stable, under load or while idle. However, it seems that my Ryzen does not want to boost. As far as I know, it should boost to 3.7Ghz on one core, and if all cores are busy, it should be 3.2Ghz for all cores.

    But no matter what I try, the CPU only clocks to 3Ghz. Down clocking works (1.55Ghz & 2.7Ghz), but even when compiling large project with -j 16 and all cores are under full load, it's only @ 3Ghz:

    watch -n 1 'cat /proc/cpuinfo | grep "cpu MHz"'

    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000
    cpu MHz : 3000.000

    What am I missing here?


  • #2
    noone? :-(

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